R&D activities on accelerator-driven transmutation system in JAERI

Oigawa, Hiroyuki ; Tsujimoto, Kazufumi ; Kikuchi, Kenji; Kurata, Yuji; Sasa, Toshinobu   ; Umeno, Makoto*; Saito, Shigeru   ; Nishihara, Kenji  ; Mizumoto, Motoharu; Takano, Hideki*; Ouchi, Nobuo 

JAERI is conducting the study on the dedicated transmutation system using the accelerator driven subcritical system (ADS). A subcritical reactor with the thermal power of 800 MW has been proposed. Many research and development activities including the conceptual design study are under way and planned at JAERI to examine the feasibility of the ADS. In the field of the proton accelerator, a superconducting LINAC is being developed. In the field of the spallation target using lead-bismuth eutectic (LBE), material corrosion, thermal-hydraulics, polonium behavior, and irradiation effect on materials are being studied. Moreover, in the framework of the J-PARC project, JAERI plans to construct the Transmutation Experimental Facility (TEF) to study the feasibility of the ADS using a high-energy proton beam and nuclear fuel and to establish the technology for the LBE spallation target and relevant materials.